// For MyEclipse Blue 8.0
package crake.myeclipse;

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;

/**
 * The Class MyEclipseBlueGen.
 */
public class MyEclipseBlueGen {

	/**
	 * Gets the serial.
	 * 
	 * @param userId the user id
	 * @param version the version
	 * @param licenseNum the license num
	 * @param selected the selected
	 * @return the serial
	 */
	public static String getSerial(String userId, String version, String licenseNum, boolean selected) {
		Calendar cal = Calendar.getInstance();
		cal.add(1, 3);
		cal.add(6, -1);
		NumberFormat nf = new DecimalFormat("000");
		licenseNum = nf.format(Integer.valueOf(licenseNum));
		String verTime =
				selected
						? (new StringBuffer("-")).append((new SimpleDateFormat("yyMMdd")).format(cal.getTime())).append("0").toString()
						: "-1112150"; // Limit year 11/12/15
		String type = "YE3MB-";
		String need =
				(new StringBuffer(String.valueOf(userId.substring(0, 1)))).append(type).append(version).append(licenseNum).append(verTime).toString();
		String dx =
				(new StringBuffer(String.valueOf(need))).append("Decompiling this copyrighted software is a violation of both your license agreement and the Digital Millenium Copyright Act of 1998 (http://www.loc.gov/copyright/legislation/dmca.pdf). Under section 1204 of the DMCA, penalties range up to a $500,000 fine or up to five years imprisonment for a first offense. Think about it; pay for a license, avoid prosecution, and feel better about yourself.")

				.append(userId).toString();
		int suf = decode(dx);
		String code = (new StringBuffer(String.valueOf(need))).append(String.valueOf(suf)).toString();
		return change(code);
	}

	/**
	 * The main method.
	 * 
	 * @param args the arguments
	 */
	public static final void main(String[] args) {
		String id = "RiRai"; // Name
		String num = "10"; // Num for cra
		System.out.println(getSerial(id, "100", num, false));
	}

	/**
	 * Change.
	 * 
	 * @param s the s
	 * @return the string
	 */
	private static String change(String s) {
		byte abyte0[] = s.getBytes();
		char ac[] = new char[s.length()];
		int i = 0;
		for (int k = abyte0.length; i < k; i++) {
			int j = abyte0[i];
			if ((j >= 48)
					&& (j <= 57)) {
				j = ((j - 48) + 5) % 10 + 48;
			} else if ((j >= 65)
					&& (j <= 90)) {
				j = ((j - 65) + 13) % 26 + 65;
			} else if ((j >= 97)
					&& (j <= 122)) {
				j = ((j - 97) + 13) % 26 + 97;
			}
			ac[i] = (char) j;
		}

		return String.valueOf(ac);
	}

	/**
	 * Decode.
	 * 
	 * @param s the s
	 * @return the int
	 */
	private static int decode(String s) {
		int i = 0;
		char ac[] = s.toCharArray();
		int j = 0;
		for (int k = ac.length; j < k; j++) {
			i = 31
					* i
					+ ac[j];
		}

		return Math.abs(i);
	}
}
